Feeltech FY3200s Repair

[Unordung]

Hey guys,
Quite a while back I kinda maybe sorta connected my cheap Chinese fun gen (Feeltech FY3200s) directly to 30V DC.
Needless to say the fun gen was not impressed. Quite surprisingly the only damage was to the Chanel in question.
It still generates the desired frequency and signal but the amplitude is at best 10mV.

Thus I suspect the output amplifier for the channel 1 is damaged. Does anyone have a schematic for this unit before I go digging about?
I have been Googling for about an hour and cant find one so you guys are my last hope.

Regards

[goaty]

https://www.insidegadgets.com/2015/02/20/inside-the-feeltech-12mhz-dds-function-generator/

here probably replace LMH6643

[Unordung]

Not quite the same unit I'm afraid.
That unit is USB input while mine is mains input.
The PCB is entirely different.

[goaty]

Ah ok, didn´t read its another model...

Here´s a picture of yours
https://chinese-electronics-products-tested.blogspot.com/p/fy3200s-function-generator-tested.html

Guess it´s the chip under the heatsink then. Maby you can replace  it.

[Giorgio Santantonio]

Did you fix the problem? I have the same identical issue and I'd be interested to have an help in fixing the problem.
Thank you